In case anybody else runs into this, here's a little more info on what was happenig:
- this issue only happened when I use milestones of the same name. So, in one workspace (Project1) I would created a milestone called "Design" and in another workspace (Project2) I would create another milestone called "Design". The issue stopped occurring once I started using unique names for milestones... so "Project1 Design" instead of just "Design". This seems weird, but I haven't heard from anyone else dealing with this issue so maybe it's a fluke.